10 Essential Facts for Understanding the Ear

7. Inner Ear

The inner ear is the deepest part of the ear, nestled within the bony labyrinth, a maze-like passageway of bone. These bones are lined with a network of tubes called the membranous labyrinth. The inner ear contains a fluid cushion called perilymph located between the two labyrinths, as well as a fluid called endolymph within the membranous labyrinth. The inner ear also contains the vestibule, which is largely responsible for our sense of balance.

ericsphotography / Getty Images